E4440A回收、E4440A回收、E4440A回收
jammer()jammer()jammer()jammer()
jammer()jammer()E4440A频谱分析仪/3 Hz - 26.5 GHzjammer()jammer()回收工厂闲置/倒闭电子仪器，个人处理仪器，欢迎来电！！jammer()本公司长期专业销售、租赁、维修、计量、回收高频二手仪器！jammer()~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~jammer() 二手仪器回收/陈卫平jammer()~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~jammer() 手机: 13549336060/13378604435jammer() QQ客服：742002535jammer() 阿里旺旺:chenweipin1987jammer() 电话: 0769 - 82134961jammer() jammer()地址:广东东莞市塘厦镇塘厦jammer()jammer()本公司长期回收/销售/维修/凭租仪器:音频仪器,视频仪器,高频仪器(如网络分析仪,频谱分析仪高频信号源,无线电综合测试仪等高频仪器,并高频承接仪器维修)!jammer()jammer()E4400系列：jammer()E4401A，E4401B，E4403A，E4404A，E4405A，E4406A，E4407A，E4408A，jammer()E4402B，E4411B，E4408B，E4411A，E4403B，E4404B，E4406B，E4405B，E4407Bjammer()jammer()E4440系列：jammer()E4443A，E4443B，E4440B，E4445A，E4445B，E4448A，E4446A，E4440A，jammer()E4447A，jammer()jammer()E7400系列：jammer()E7405A，E7403A，E7404A，E7401A，E7402Ajammer()jammer()N9300系列：jammer()N9320A，N9320B，N9340B，N9340A，N9342C，N9010A，N9020A，N9030Ajammer()jammer()R3132A，R3361C，R3261C，R3131，HM5010，HM5011，jammer()HM5012，HM5014，HM5510，HM5511，SA970，SA-930，jammer()主要特性与技术指标jammer()性能jammer()+/-0.24 dB绝对幅度精度jammer()-155 dBm/Hz显示的平均噪声电平（DANL）jammer()10 kHz偏置时的相噪：-118 dBc/Hzjammer()81 dB W-CDMA ACLR 动态范围jammer()分析带宽jammer()40或80 MHz分析带宽支持捕获和测量复杂的信号。jammer()-78 dB（额定值）三阶互调jammer()0.5 dB IF频率响应jammer()-78 dB（额定值）三阶互调jammer()灵活性jammer()功率套件能对20多种无线制式进行一键式功率测量jammer()描述jammer()E4440 PSA测量高达26.5GHz的RF及微波信号。jammer()jammer()全新！ HSDPA/HSUPA 测量专用件jammer()jammer()全新！ 内置接收器专用件jammer()jammer()主要特性:jammer()了解更多特性, 请查阅PSA 系列宣传资料jammer()jammer()动态范围jammer()-155dBm 显示平均噪声级 （DANL）jammer()+17 dBm 三阶互调（TOI）（+19 dBm 典型）jammer()-116 dBc/Hz 相位噪声（10 kHz 偏置）（-118dBc/Hz 典型）jammer()精确度jammer()±0.62 dB绝对振幅精度(±0.24 dB 典型)jammer()±0.38 dB 频率响应 (±0.11 dB 典型)jammer()±0.07 dB对数放大线性度jammer()速度jammer()快速低电平寄生搜索jammer()<30 ms 快速ACP测量jammer()50测量/秒本地更新率，45测量/秒远地测量jammer()标准特性：jammer()具有自动量程功能的全数字IFjammer()相噪优化jammer()全套检波器套件jammer()160个分辨率带宽设置（10%步进)jammer()2 dB 步进衰减器jammer()FFT 及扫频测量模式jammer()门通选扫频jammer()套单键功率测量jammer()用内置的CISPR和MIL标准预兼容EMI检波器和带宽进行EMI测量jammer()可选特性：jammer()内置前置放大器(选项 1DS: 100 kHz - 3 GHz； 选项 110: 10 MHz - 26.5 GHz)jammer()简便易用的内置 PSA系列测量专用键jammer()调制分析及链接到89601A矢量信号分析软件jammer()40 MHz 或80 MHz 带宽数字转换器jammer()采用 外混频的325 GHz频率范围jammer()jammer()Rapid growth in satellite and wireless communications markets has contributed to the need for improved overall system performance which, in turn, applies pressure to improve the noise figure measurement and performance of subsystems and their components.jammer()jammer()To do this accurately, it is necessary to understand how a number of variables affect the overall measurement uncertainty. For measurements with an analyzer that measures noise figure, the measurement system contributors typically include:jammer()jammer()the analyzer itselfjammer()the noise sourcejammer()the characteristics of the device under test (DUT)jammer()These factors interact in a complex way, but the overall measurement uncertainty can be modeled. The purpose of our 'Noise Figure Uncertainty Calculator' is to provide the measurement uncertainty associated with a particular DUT based on its characteristics and the specifications of the measurement system. For the model to be accurate in the Y-factor measurement technique case, the DUT must have reasonable reverse isolation, so that mismatch on one port does not drastically affect the impedance seen at the other port. For a more complete analysis refer to the article "Calculate the Uncertainty of NF Measurements", written by Duncan Boyd, Microwaves & RF October 1999, pp.93-102.
